Probability Predictions and Expectations

The video tutorial explains how to use probability to make predictions. It covers activities involving a die, a spinner, and marble selection to demonstrate calculating probabilities and making predictions based on those probabilities. The tutorial emphasizes that the more trials conducted, the closer the results will align with theoretical probabilities.

What is the primary purpose of using probability in predictions?

• To ensure a specific outcome occurs

• To estimate the likelihood of different outcomes

• To determine the exact outcome of an event

• To eliminate uncertainty in events

If you roll a six-sided die six times, what is the predicted number of times it will land on an odd number?

• 3 times

• 2 times

• 4 times

• 1 time

What is the probability of rolling a two or three on a six-sided die?

• 1/6

• 1/2

• 1/3

• 2/3

How does increasing the number of trials affect the accuracy of probability predictions?

• It decreases accuracy

• It has no effect

• It increases accuracy

• It makes predictions less reliable

What is the probability of spinning a two or three on an eight-outcome spinner?

• 1/4

• 1/2

• 1/8

• 3/4

If you spin a spinner with eight outcomes eight times, how many times is it predicted to land on a number four or more?

• 4 times

• 5 times

• 3 times

• 2 times

What is the probability of spinning exactly a five on an eight-outcome spinner?

• 3/4

• 1/4

• 1/2

• 1/8

Using proportions, how many times would you expect to spin a two, three, four, or five on a six-outcome spinner in 54 spins?

• 18 times

• 27 times

• 45 times

• 36 times

If you have a jar with six marbles and four are yellow, what is the probability of picking a yellow marble?

• 1/6

• 1/3

• 2/3

• 4/6

In 240 attempts, how many times would you expect to successfully pick a yellow marble from a jar with a 2/3 probability?

• 80 times

• 200 times

• 120 times

• 160 times